Vulnerability-Lookup

CVE-2026-44290 (GCVE-0-2026-44290)

Vulnerability from cvelistv5 – Published: 2026-05-13 14:41 – Updated: 2026-05-14 13:45

Title

protobufjs: Process-wide denial of service through unsafe option paths

Summary

protobufjs compiles protobuf definitions into JavaScript (JS) functions. Prior to 7.5.6 and 8.0.2, protobufjs allowed certain schema option paths to traverse through inherited object properties while applying options. A crafted protobuf schema or JSON descriptor could cause option handling to write to properties on global JavaScript constructors, corrupting process-wide built-in functionality. This vulnerability is fixed in 7.5.6 and 8.0.2.

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE

CWE-1321 - Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

Assigner

GitHub_M

References

1 reference

URL	Tags
https://github.com/protobufjs/protobuf.js/securit…	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
protobufjs	protobuf.js	Affected: < 7.5.6 Affected: >= 8.0.0, < 8.0.2

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-44290

Vulnerability from fkie_nvd - Published: 2026-05-13 16:16 - Updated: 2026-05-14 12:23

Severity

7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/protobufjs/protobuf.js/security/advisories/GHSA-jvwf-75h9-cwgg	Mitigation, Vendor Advisory

Impacted products

	Vendor	Product	Version
	protobufjs_project	protobufjs	*
	protobufjs_project	protobufjs	*

JSON

To clipboard

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    {
      "nodes": [
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              "criteria": "cpe:2.3:a:protobufjs_project:protobufjs:*:*:*:*:*:node.js:*:*",
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    }
  ],
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  "lastModified": "2026-05-14T12:23:20.007",
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GHSA-JVWF-75H9-CWGG

Vulnerability from github – Published: 2026-05-12 15:01 – Updated: 2026-05-14 20:35

Summary

protobuf.js: Process-wide denial of service through unsafe option paths

Details

Summary

protobufjs allowed certain schema option paths to traverse through inherited object properties while applying options. A crafted protobuf schema or JSON descriptor could cause option handling to write to properties on global JavaScript constructors, corrupting process-wide built-in functionality.

Impact

An attacker who can provide or influence protobuf schemas or JSON descriptors may be able to corrupt built-in process state in a way that causes subsequent application code or protobufjs code to fail. This can result in a persistent denial of service for the lifetime of the affected process.

This issue affects applications that parse or load protobuf schemas or descriptors from untrusted sources. Applications that use bundled, generated, or otherwise trusted schemas to decode untrusted protobuf message payloads are not directly affected.

The issue is not known to allow code execution by itself.

Preconditions

The application must allow an attacker to control or influence a protobuf schema or JSON descriptor.
The application must parse or load that schema through protobufjs reflection APIs such as parse, Root.load, Root.loadSync, or Root.fromJSON.
The crafted input must contain option paths that reach unsafe inherited properties during option processing.

Workarounds

Do not parse or load protobuf schemas or JSON descriptors from untrusted sources with affected versions. If untrusted schemas must be accepted, validate or reject option names containing unsafe property path components before loading them, and run schema processing in an isolated process.

Severity

7.5 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Show details on source website

JSON

To clipboard

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  "affected": [
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      "database_specific": {
        "last_known_affected_version_range": "\u003c= 7.5.5"
      },
      "package": {
        "ecosystem": "npm",
        "name": "protobufjs"
      },
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        {
          "events": [
            {
              "introduced": "0"
            },
            {
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            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
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        "last_known_affected_version_range": "\u003c= 8.0.1"
      },
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        "ecosystem": "npm",
        "name": "protobufjs"
      },
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            },
            {
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            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-44290"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1321"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-05-12T15:01:13Z",
    "nvd_published_at": "2026-05-13T16:16:55Z",
    "severity": "HIGH"
  },
  "details": "## Summary\n\nprotobufjs allowed certain schema option paths to traverse through inherited object properties while applying options. A crafted protobuf schema or JSON descriptor could cause option handling to write to properties on global JavaScript constructors, corrupting process-wide built-in functionality.\n\n## Impact\n\nAn attacker who can provide or influence protobuf schemas or JSON descriptors may be able to corrupt built-in process state in a way that causes subsequent application code or protobufjs code to fail. This can result in a persistent denial of service for the lifetime of the affected process.\n\nThis issue affects applications that parse or load protobuf schemas or descriptors from untrusted sources. Applications that use bundled, generated, or otherwise trusted schemas to decode untrusted protobuf message payloads are not directly affected.\n\nThe issue is not known to allow code execution by itself.\n\n## Preconditions\n\n- The application must allow an attacker to control or influence a protobuf schema or JSON descriptor.\n- The application must parse or load that schema through protobufjs reflection APIs such as `parse`, `Root.load`, `Root.loadSync`, or `Root.fromJSON`.\n- The crafted input must contain option paths that reach unsafe inherited properties during option processing.\n\n## Workarounds\n\nDo not parse or load protobuf schemas or JSON descriptors from untrusted sources with affected versions. If untrusted schemas must be accepted, validate or reject option names containing unsafe property path components before loading them, and run schema processing in an isolated process.",
  "id": "GHSA-jvwf-75h9-cwgg",
  "modified": "2026-05-14T20:35:12Z",
  "published": "2026-05-12T15:01:13Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/protobufjs/protobuf.js/security/advisories/GHSA-jvwf-75h9-cwgg"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-44290"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/protobufjs/protobuf.js"
    },
    {
      "type": "WEB",
      "url": "https://github.com/protobufjs/protobuf.js/releases/tag/protobufjs-v7.5.6"
    },
    {
      "type": "WEB",
      "url": "https://github.com/protobufjs/protobuf.js/releases/tag/protobufjs-v8.0.2"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "protobuf.js: Process-wide denial of service through unsafe option paths"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

CVE-2026-44290 (GCVE-0-2026-44290)

FKIE_CVE-2026-44290

GHSA-JVWF-75H9-CWGG

Summary

Impact

Preconditions

Workarounds

Tags

Sightings

Nomenclature